If you don't have a keen eye and a perfect memory, you probably can't spot all the differences between two data columns in a large worksheet. Discovering these differences can be important if values ...

Microsoft Excel's Data Validation tool lets you add a drop-down list to a cell based on existing data in a column. However, how this works depends on whether the source data is part of a formatted ...

Replace manual Excel tasks with conditional columns, smart merging, the unpivot tool, and more.